Update onboard_logging.js

Author: breadoven

tabs/onboard_logging.js

@@ -353,7 +353,7 @@ TABS.onboard_logging.initialize = function (callback) {
         const date = new Date();
         const filename = 'blackbox_log_' + date.getFullYear() + '-'  + zeroPad(date.getMonth() + 1, 2) + '-'
                 + zeroPad(date.getDate(), 2) + '_' + zeroPad(date.getHours(), 2) + zeroPad(date.getMinutes(), 2)
-                + zeroPad(date.getSeconds(), 2) + '.txt';
+                + zeroPad(date.getSeconds(), 2) + '.TXT';
 
         nwdialog.setContext(document);
         nwdialog.saveFileDialog(filename, function(file) {